DoesSocketExist always returns false for Sprite Sockets (flipbooks and sprite components)

UE - Gameplay - Paper2D - Jan 15, 2015

DoesSocketExist always returns false for Sprites in a Flipbook, whether there is a socket on any/all of the Sprites or not. Note: GetSocketLocation seems to work fine, indicating that it is reading ...

Material Parameter Collection does not correctly render in Widget BP

UE - Editor - UI Systems - Feb 23, 2015

If a Material Parameter Collection with a Scalar Parameter is used within a material and that material is called within a widget the scalar parameter will render with a 0 value, even when set to ano ...

Disabling collision of an actor after an overlap event will cause the event to fire twice

UE - Gameplay - Sep 3, 2015

Disabling collision of an actor after an overlap event will cause the event to fire twice This is working properly in 4.10-2674146 User Description: Calling on "Set Actor EnableCollision" or "Set ...

Importing FBX will override UV Channel 0 on Linux

UE - Platform - Linux - Jun 3, 2015

Importing an FBX to the editor on Linux with "Generate Lightmap UVs" checked to true will override UV Channel 0 rather than creating the lightmap on a seperate UV channel. ...

Material Particle SubUV Sample does not work with Tex Object

UE - Rendering Architecture - Materials - Aug 29, 2025

The Particle SubUV Sample node uses its own texture object reference instead of the one provided by the texture object node. ...

Intermittent Crash in Pose Search during Cook

UE - Anim - Gameplay - Jan 27, 2025

User reports that they've been running into an intermittent crash in Pose Search during Cook. Pose Search attempts to index data outside the bounds of an array. Based on the logs, each asset seems t ...

Event Trace Log prints node actions multiple times

UE - Gameplay - Blueprint - Jun 10, 2015

If a blueprint has a breakpoint on a node and that node is utilized in PIE, the Event Trace in the Debug Log window will register each action taken by the blueprint multiple times. ...

Sample game headers aren't set up in an extensible way

Docs - Samples - Mar 30, 2015

Our sample games all seem to use the semi-deprecated Classes folder for their headers, and many of these headers omit a #pragma once (or other header guard). This means that they don't play nicely ...

Color Picker changes Hex Value when manually entered

Tools - Aug 22, 2014

In the Material Instance, the color picker will change the color when typing in the Hex Value. IMPACT:                   Incorrect color selection through manual Hex Code input WORKAROUND: Do not ...